Pump for cryogenic fluids

Details Pump for cryogenic fluids Pump for cryogenic fluids

1985-02-04

1987-01-27

Freeh, William L.

Pumps

Successive stages

Reciprocating rigid stages

417901, F04B 300, F04B 1508

Patent

active

046391975

ABSTRACT:
The cryogenic pump operates in two stages, utilizing a supercharging part and a high pressure part. These two parts are comprised of a high pressure piston pump (3, 4, 34, 35) and a supercharger (5, 6, 61, 62) disposed in a tandem relationship and sharing a common piston rod (8). The supercharger is enclosed in a heat insulated intermediate container (7) and delivers the liquid cryogenic fluid to the high pressure cylinder. The pump operates to convey a liquid cryogenic fluid such as liquid nitrogen, for example, at a high pressure through evaporating means into pressure resistant commercial steel cylinders where the gaseous nitrogen is kept at a pressure of 200 bar and ambient temperature.

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patent: 3136136 (1964-06-01), Goltzmann
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patent: 3160105 (1964-12-01), Sherman et al.
patent: 3220202 (1965-11-01), Goltzmann
patent: 3379132 (1968-04-01), Wagner
patent: 3495544 (1970-02-01), Enssle
patent: 4239460 (1980-12-01), Golz
patent: 4447195 (1984-05-01), Schuck

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